Proto 1/2" Drive 6-Point Impact Socket, 21mm
The Proto 1/2" Drive 21mm 6-Point Impact Socket is built for use with impact wrenches and pneumatic tools, delivering reliable torque transfer in demanding industrial and MRO applications. The...
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Create A New AccountThe Proto J7421M 1/2" drive impact socket is engineered for use with impact wrenches and air tools, featuring a 6-point design that maximizes contact with fastener flats to reduce rounding and deliver reliable torque transfer.
Built to professional standards, this 21mm metric impact socket is a dependable choice for automotive, industrial, and MRO applications where durability and precise fit are essential.